.input-box {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  padding: 20rpx 32rpx;
  background-color: #ffffff;
  box-shadow: 0 -2rpx 20rpx rgba(0, 0, 0, 0.05);
  padding-bottom: 45rpx;
}

.message-input {
  flex: 1;
  height: 80rpx;
  padding: 0 32rpx;
  font-size: 32rpx;
  background-color: #f5f5f5;
  border-radius: 40rpx;
  margin-right: 24rpx;
}

.input-placeholder {
  color: #999;
  font-size: 32rpx;
}

.send-button {
  width: 160rpx !important;
  height: 80rpx;
  line-height: 80rpx;
  font-size: 32rpx;
  color: #ffffff;
  background-color: #007AFF;
  border-radius: 40rpx;
  padding: 0;
  margin: 0;
}

.feature-button {
  width: 80rpx;
  height: 80rpx;
  border-radius: 50%;
  background-color: #f5f5f5;
  margin-left: 20rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  
  &.active {
    transform: rotate(45deg);
  }
}

.plus-icon {
  position: relative;
  width: 40rpx;
  height: 4rpx;
  background-color: #666;
  
  &::after {
    content: '';
    position: absolute;
    width: 4rpx;
    height: 40rpx;
    background-color: #666;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }
}